From a2c2f410071c3b4dcb6660f9dafdfe0db88d79a3 Mon Sep 17 00:00:00 2001
From: gaeun5744 <geun5744@gmail.com>
Date: Mon, 16 Dec 2024 23:24:28 +0900
Subject: [PATCH] =?UTF-8?q?feat:=20polling=EC=9D=84=20=EC=9D=B4=EC=9A=A9?=
 =?UTF-8?q?=ED=95=9C=20=EB=A9=94=EC=8B=9C=EC=A7=80=20=EC=97=86=EB=8D=B0?=
 =?UTF-8?q?=EC=9D=B4=ED=8A=B8=20=EA=B5=AC=ED=98=84?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../ui/chatlist/ChatListFragment.kt           | 16 +++++++-----
 .../ui/chatlist/ChatListViewModel.kt          | 26 ++++++++++++++-----
 2 files changed, 30 insertions(+), 12 deletions(-)

diff --git a/android/app/src/main/java/com/happy/friendogly/presentation/ui/chatlist/ChatListFragment.kt b/android/app/src/main/java/com/happy/friendogly/presentation/ui/chatlist/ChatListFragment.kt
index d7e649d80..58cbe3dc1 100644
--- a/android/app/src/main/java/com/happy/friendogly/presentation/ui/chatlist/ChatListFragment.kt
+++ b/android/app/src/main/java/com/happy/friendogly/presentation/ui/chatlist/ChatListFragment.kt
@@ -26,15 +26,19 @@ class ChatListFragment :
         binding.vm = viewModel
     }
 
-    override fun onStart() {
-        super.onStart()
-        viewModel.getChats()
+    override fun onHiddenChanged(hidden: Boolean) {
+        super.onHiddenChanged(hidden)
+        if (hidden) {
+            viewModel.cancelPolling()
+        } else {
+            viewModel.getPollingChats()
+        }
     }
 
     private fun initAdapter() {
         adapter = ChatListAdapter(this)
         binding.rcvChatList.adapter = adapter
-        viewModel.getChats()
+        viewModel.getPollingChats()
         viewModel.chats.observe(viewLifecycleOwner) { chats ->
             adapter.submitList(chats)
         }
@@ -43,7 +47,7 @@ class ChatListFragment :
 
     private fun swipeEvent() {
         binding.swipelayoutChatListRefresh.setOnRefreshListener {
-            viewModel.getChats()
+            viewModel.getPollingChats()
             binding.swipelayoutChatListRefresh.isRefreshing = false
         }
     }
@@ -59,7 +63,7 @@ class ChatListFragment :
             ) { result ->
 
                 if (result.resultCode == LEAVE_CHAT_CODE) {
-                    viewModel.getChats()
+                    viewModel.getPollingChats()
                 }
             }
     }
diff --git a/android/app/src/main/java/com/happy/friendogly/presentation/ui/chatlist/ChatListViewModel.kt b/android/app/src/main/java/com/happy/friendogly/presentation/ui/chatlist/ChatListViewModel.kt
index 14fbd61a1..78d59590c 100644
--- a/android/app/src/main/java/com/happy/friendogly/presentation/ui/chatlist/ChatListViewModel.kt
+++ b/android/app/src/main/java/com/happy/friendogly/presentation/ui/chatlist/ChatListViewModel.kt
@@ -8,6 +8,9 @@ import com.happy.friendogly.domain.usecase.GetChatListUseCase
 import com.happy.friendogly.presentation.base.BaseViewModel
 import com.happy.friendogly.presentation.ui.chatlist.uimodel.ChatListUiModel
 import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.isActive
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 
@@ -23,6 +26,8 @@ class ChatListViewModel
         var memberId: Long = 0L
             private set
 
+        private var pollJob: Job? = null
+
         val isChatEmpty =
             MediatorLiveData<Boolean>().apply {
                 addSource(_chats) {
@@ -30,12 +35,21 @@ class ChatListViewModel
                 }
             }
 
-        fun getChats() {
-            viewModelScope.launch {
-                getChatListUseCase.invoke().onSuccess { room ->
-                    _chats.value = room.chatRooms.map { it.toUiModel() }
-                    memberId = room.myMemberId
+        fun getPollingChats() {
+            pollJob?.cancel()
+            pollJob =
+                viewModelScope.launch {
+                    while (this.isActive) {
+                        getChatListUseCase.invoke().onSuccess { room ->
+                            _chats.value = room.chatRooms.map { it.toUiModel() }
+                            memberId = room.myMemberId
+                        }
+                        delay(1000)
+                    }
                 }
-            }
+        }
+
+        fun cancelPolling() {
+            pollJob?.cancel()
         }
     }